Results 1 to 10 of about 5,062,421 (261)

Numerical Simulation on Flow Dynamics and Pressure Variation in Porous Ceramic Filter

open access: yesComputation, 2018
Using five samples with different porous materials of Al2TiO5, SiC, and cordierite, we numerically realized the fluid dynamics in a diesel filter (diesel particulate filter, DPF). These inner structures were obtained by X-ray CT scanning to reproduce the
Kazuhiro Yamamoto, Yusuke Toda
doaj   +1 more source

High stability in filtration apparatus of African shrimp

open access: yesiScience, 2023
Summary: The African shrimp (Atya gabonensis) uses elongated setae to filter feed, adapting to high flow velocities. The setae’s stability stems from carefully designed geometric and structural parameters, notably a specialized wall and distribution ...
Yifeng Liao   +5 more
doaj   +1 more source

Two-dimensional numerical studies of particle motion and deposition in the channel of diesel particulate filters

open access: yesRoyal Society Open Science, 2021
A numerical investigation on the soot laden flow of gas in a partial diesel particulate filter (PDPF) is presented based on solving the momentum equations for a continuous phase in the Euler frame and the motion equations for the dispersed phase in the ...
Xiaolong Wang, Yangbo Deng, Yang Liu
doaj   +1 more source

Measurements of fuel adhesion on cylinder walls and fuel wall-flow behavior with post diesel fuel injections

open access: yesInternational Journal of Engine Research, 2020
Post fuel injection in the expansion stroke is used for diesel particulate filter regeneration; however, fuel spray impinges on the cylinder liner due to the low temperature and pressure conditions. Fuel adhesion and fuel flowing down across the cylinder
Gen Shibata   +5 more
semanticscholar   +1 more source

Research on flow and heat transfer at different positions in CDPF channel based on three-dimensional thermal LBM

open access: yesCase Studies in Thermal Engineering, 2023
To explore the flow, heat transfer and oxidative regeneration mechanism of the porous media of the catalytic diesel particulate filter at the pore scale, catalytic diesel particulate filter and particulate layer structure were built using three ...
Jiawang Geng   +5 more
doaj   +1 more source

Hemodynamic Analysis of VenaTech Convertible Vena Cava Filter Using Computational Fluid Dynamics

open access: yesFrontiers in Bioengineering and Biotechnology, 2020
The VenaTech convertible filter (VTCF) has been widely used as an inferior vena cava (IVC) filter to prevent fatal pulmonary embolism in patients. However, its hemodynamics that greatly affect the filter efficacy and IVC patency are still unclear.
Jingying Wang   +6 more
doaj   +1 more source

Comparing the effectiveness of negative-pressure barrier devices in providing air clearance to prevent aerosol transmission.

open access: yesPLoS ONE, 2021
PurposeTo investigate the effectiveness of aerosol clearance using an aerosol box, aerosol bag, wall suction, and a high-efficiency particulate air (HEPA) filter evacuator to prevent aerosol transmission.MethodsThe flow field was visualized using three ...
Tzu-Yao Hung   +7 more
doaj   +1 more source

Catalytic Wall Flow Filters for the Reduction of Biomass Boilers Emissions

open access: yesChemical Engineering Transactions, 2014
Biomass is worldwide available and the interest in it as energy source has been increased in the recent years, with the aim to reduce the fossil fuels dependence and to increase energy supply in developing countries. Nevertheless, biomass combustion emissions put some concerns for its environmental acceptance, particularly for carbon monoxide (CO ...
G. Stoppiello   +4 more
openaire   +3 more sources

Simulation of Triangular-Cell-Shaped, Fibrous Wall-Flow Filters

open access: yesSAE Technical Paper Series, 2003
<div class="htmlview paragraph">In the present work we apply a computational simulation framework developed for square-cell shaped honeycomb Diesel Particulate Filters to study the filtration, pressure drop and soot oxidation characteristics of recently developed triangular-cell-shaped, high porosity wall-flow filters.
Konstandopoulos, Athanasios   +3 more
openaire   +2 more sources

Calibration of RANS model constant based on data assimilation and accurate simulation of separated flow

open access: yesAIP Advances, 2022
To improve the prediction accuracy of separated flow based on the Reynolds Averaged Navier–Stokes model, the model constants of the baseline Reynolds stress model are calibrated by the ensemble Kalman filter data assimilation method.
Xiliang Song   +3 more
doaj   +1 more source

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